Circular saw



FIG. 1 is a rear left perspective view of the circular saw;

FIG. 2 is a front left perspective view thereof;

FIG. 3 is a rear right perspective view thereof;

FIG. 4 is a front right perspective view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a rear view thereof;

FIG. 7 is a front view thereof;

FIG. 8 is a left side view thereof;

FIG. 9 is a top plan view thereof; and,

FIG. 10 is a bottom plan view thereof.

The broken lines shown in the figures represent contours of the claimeddesign.

CLAIM The ornamental design for the circular saw, as shown anddescribed.